By Topic

Trade-Off Analysis Considering Tomogram Quality and Performance of a Parallel Computing Hardware Realization of Katsevich's Reconstruction Algorithm

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Nellesen, J. ; Inst. of Mater. Eng., Tech. Univ. Dortmund Univ., Dortmund, Germany ; Weichert, F. ; Timm, C. ; Kerbitz, R.A.
more authors

In this paper, the trade-off between the target variables tomogram quality and reconstruction time of an implementation of Katsevich's exact reconstruction algorithm for helical cone-beam computed tomography (CT) is analyzed. This is accomplished by means of an OpenCL-based, parallel and portable realization of Katsevich's algorithm. The detailed examination is carried out on a phantom object which is composed of cubes with different attenuation coefficients. For this phantom object, X-ray cone-beam projections are simulated with different helix trajectory parameters. From the simulated projection data sets 3D tomograms are reconstructed. The impacts of the helix parameters on the tomogram quality and the reconstruction time are measured. Moreover, the speedup in dependence of the number of computing units on the OpenCL device is examined. To sum up the results: the tomogram quality increases monotonically with ascending number of projections while keeping the helix pitch fixed. A linear relationship between the overall runtime and the number of projections exists. The trade-off analysis between the tomogram quality and the reconstruction time proves that an optimum is reached if the criteria for the lateral and vertical sampling of the 3D space are fulfilled.

Published in:

Nuclear Science, IEEE Transactions on  (Volume:60 ,  Issue: 5 )